Serious MAF problems

Jeff Chambers · 10-28-2005, 12:07 PM

With the dry shot it is going to be imperative that you have the car properly tuned. If you're running at 14:1 now and hit it with a 150 shot, you could easily roach the motor.

If I were tuning your car, I would put a four-program SCT switch chip in it with a base N/A program, then a program or two for the NOS (say a 75hp and 150hp tune). You need to find a tuner close to your area since the car needs to go on the dyno for wide band A/F measurements to do the tuning correctly. In general, I think you'll find that a switch chip will run you close to $300 and dyno time anywhere from $75 to $150 per hour. I tell EFI people to plan conservatively for two hours on the dyno for a good tune.

XSRACING-GT · 10-28-2005, 12:48 PM

OK, thanks for all your help and advice. Do you think that the SCT and dyno tuning will solve my problem, or do you think its something with a part I have? MAybe because of the mods and all, the eec IV wont correctly judge the a/f ratio and screw up?

10-28-2005, 12:07 PM	#1
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Serious MAF problems With the dry shot it is going to be imperative that you have the car properly tuned. If you're running at 14:1 now and hit it with a 150 shot, you could easily roach the motor. If I were tuning your car, I would put a four-program SCT switch chip in it with a base N/A program, then a program or two for the NOS (say a 75hp and 150hp tune). You need to find a tuner close to your area since the car needs to go on the dyno for wide band A/F measurements to do the tuning correctly. In general, I think you'll find that a switch chip will run you close to $300 and dyno time anywhere from $75 to $150 per hour. I tell EFI people to plan conservatively for two hours on the dyno for a good tune. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

10-28-2005, 12:48 PM	#2
XSRACING-GT Registered Member Join Date: Oct 2005 Posts: 7	Re: Serious MAF problems OK, thanks for all your help and advice. Do you think that the SCT and dyno tuning will solve my problem, or do you think its something with a part I have? MAybe because of the mods and all, the eec IV wont correctly judge the a/f ratio and screw up? __________________ Had a little Toyota for breakfast, some Mitsu for lunch, and a good ol' fashioned Honda for dinner. And for Dessert? A nice big CHEVY!

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